JavaScript closest
When it comes to finding relationships between elements, we traditionally think of a top-down approach. We can thank CSS and querySelector/querySelectorAll for that relationship in selectors. What if we want to find an element's parent based on selector?
To look up the element tree and find a parent by selector, you can use HTMLElement's closest method:
// Our sample element is an "a" tag that matches ul > li > a
const link = document.querySelector('li a');
const list = a.closest('ul');
closest looks up the ancestor chain to find a matching parent element -- the opposite of traditional CSS selectors. You can provide closest a simple or complex selector to look upward for!
![Write Better JavaScript with Promises]()
You've probably heard the talk around the water cooler about how promises are the future. All of the cool kids are using them, but you don't see what makes them so special. Can't you just use a callback? What's the big deal? In this article, we'll...
![5 Awesome New Mozilla Technologies You’ve Never Heard Of]()
My trip to Mozilla Summit 2013 was incredible. I've spent so much time focusing on my project that I had lost sight of all of the great work Mozillians were putting out. MozSummit provided the perfect reminder of how brilliant my colleagues are and how much...
![MooTools’ AutoCompleter Plugin]()
One of the famous MooTools plugins is Harald Kirschner's AutoCompleter plugin. AutoCompleter takes a term input by the user and searches for matches -- an obviously help to the user. Here's how to make the most of Harald's great plugin.
The XHTML
All we...
![Introducing MooTools ScrollSide]()
This post is a proof of concept post -- the functionality is yet to be perfected.
Picture this: you've found yourself on a website that uses horizontal scrolling instead of vertical scrolling. It's an artistic site so you accept that the site scrolls left to right.
